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Home›Companies›Silence Therapeutics
Silence Therapeutics logo

Silence Therapeutics

London, United Kingdom Biotech 150 employees Founded 1994 SLN silence-therapeutics.com ↗
4 Products & services
1 Clinical trials
150 Employees

About Silence Therapeutics

Silence Therapeutics is a London-based biotech developing siRNA (short interfering RNA) medicines using its mRNAi GOLD platform.

Sector
Biotech
Headquarters
London, United Kingdom
Founded
1994
Employees
150

Milestones

Milestones as listed on sec.gov, checked 26 Sep 2026. Details can change; the linked page is the authoritative source.

1994
Incorporated as Stanford Rook Holdings plc
Incorporated in England and Wales on 18 November 1994 (company number 2992058).
Source: sec.gov
2005
Acquired Atugen AG
Acquired siRNA specialist Atugen AG in July 2005.
Source: sec.gov
2007
Renamed Silence Therapeutics plc
Changed its name to Silence Therapeutics plc on 26 April 2007.
Source: sec.gov
2020
ADSs listed on Nasdaq
ADSs listed on the Nasdaq Capital Market under "SLN" in September 2020.
Source: sec.gov
2021
Moved to Nasdaq Global Market
Moved its Nasdaq listing to the Nasdaq Global Market tier in June 2021.
Source: sec.gov
2021
Left AIM
Admission of ordinary shares to trading on AIM was cancelled in November 2021.
Source: sec.gov
2026
Positive Phase 2 SANRECO results
Announced positive topline Phase 2 SANRECO results for divesiran in polycythemia vera on 10 August 2026.
Source: sec.gov
2026
Public offering of ADSs
Agreed on 11 August 2026 to sell 12,962,963 ADSs at $13.50 each; estimated net proceeds about $164.0M.
Source: sec.gov

Leadership Team

Leadership as listed on sec.gov, checked 26 Sep 2026. Details can change; the linked page is the authoritative source.

Iain Ross

Interim Principal Executive Officer and Chairman
Source: sec.gov

Rhonda Hellums

Executive Vice President, Chief Financial Officer
Source: sec.gov

Steven Romano, M.D.

Executive Vice President, Chief Research and Development Officer
Source: sec.gov

Products & Services

Products and services as listed on silence-therapeutics.com, checked 26 Sep 2026. Details can change; the linked page is the authoritative source.

All Technology platform Cardiovascular (pipeline) Haematology (pipeline) Partnered program
Technology platform

mRNAi GOLD platform

Proprietary siRNA platform that silences disease-linked genes without permanently changing DNA.

Source: silence-therapeutics.com
Cardiovascular (pipeline)

Zerlasiran (SLN360)

Wholly owned siRNA in development to lower high lipoprotein(a), a genetic cardiovascular risk factor.

Source: silence-therapeutics.com
Haematology (pipeline)

Divesiran

Investigational siRNA for polycythaemia vera that silences TMPRSS6 to raise hepcidin levels.

Source: silence-therapeutics.com
Partnered program

SLN312

Licensed to AstraZeneca; Silence will regain global rights after Phase 1 (announced March 2026).

Source: silence-therapeutics.com

Pipeline & Regulatory Record

What public registers list for Silence Therapeutics: clinical trials it sponsors, FDA device clearances, Irish licences, recent approvals and supply shortages. Rebuilt daily, last on 10 Oct 2026.

1Trials as lead sponsor
0Recruiting now
0With a site in Ireland
0FDA device clearances

Clinical trials 1 in our ClinicalTrials.gov registers

StudyPhaseStatus
Study to Assess SLN124 in Patients With Polycythemia Vera
NCT05499013 · Polycythemia Vera
Phase 1/2Active, closed

How this is matched: register records are linked to this page by the organisation name they carry, here Silence Therapeutics plc. Spot a wrong match? Tell us.

Financials & Irish Entities

From the annual reports Silence Therapeutics plc files with the US Securities and Exchange Commission (10-K, US GAAP), in USD as reported. Latest financial year: to Dec 2025.

$559,000Revenue
$67.8mR&D expense
>999%R&D as % of revenue
−$88.6mNet income (-15,851.9% margin)
Revenue and R&D expense, USD m$0.0m$20m$40m$60m$80mDec 2022Dec 2023Dec 2024Dec 2025Dec 2022: $22m (Revenue)Dec 2023: $32m (Revenue)Dec 2024: $43m (Revenue)Dec 2025: $0.6m (Revenue)RevenueDec 2022: $44m (R&D expense)Dec 2023: $57m (R&D expense)Dec 2024: $68m (R&D expense)Dec 2025: $68m (R&D expense)R&D expense
RevenueR&D expense
Year toRevenueR&DR&D %Net incomeFiling
Dec 2025$559,000$67.8m>999%−$88.6m10-K 2026
Dec 2024$43.3m$67.9m156.9%−$45.3m10-K 2026
Dec 2023$31.6m$56.9m179.9%−$54.2m10-K 2026
Dec 2022$21.7m$43.6m201.1%−$50.3m10-K 2025

Each year is taken from the most recent annual report that includes it, so earlier years reflect any later restatement. Source: SEC EDGAR (XBRL financial data). Compare companies on the pharma company financials register.

In the News

No coverage yet — our newsroom tracks Silence Therapeutics continuously.

Research Publications

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FDA Recalls (US)

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